JP3224550U - Collision detection device - Google Patents

Abstract

Provided is a collision detection device that detects a collision from the rear side of a vehicle. A collision detection device (1) installed in a vehicle, wherein a base member (20) and one end (21) of the base member are connected to the base member so as to be openable and closable. An opening / closing member 10 formed to be capable of state transition between an open state separated from one end of the base member and a closed state abutting on one end of the base member, by receiving an acting inertial force; Detecting means for detecting a state transition in at least one direction between the open state and the closed state, the detection means being provided in the collision detection apparatus; and the state transition by the detection means being provided in the collision detection apparatus. And a detection signal output means for outputting a detection signal when detecting is detected. [Selection diagram] Fig. 1

Description

  The present invention relates to a collision detection device that is installed in a vehicle and detects a collision from the rear side of the vehicle.

  2. Description of the Related Art At work sites on or near a road, in order to secure a work area, a work area is surrounded by using a road cone or the like. Further, in order to prevent the vehicle from entering the work area, a sign car that notifies that the vehicle is being worked may be arranged upstream of the work area.

  However, as shown in FIG. 13, even when a road cone is installed on a road or the like and a sign car is arranged, the rear-end collision vehicle passes through the road cone in the tapered portion, or the rear-end collision vehicle knocks down the color cone. There has been an accident of colliding with a traffic sign. Further, in this case, an accident has occurred in which the rear-end collision vehicle pushes the sign vehicle in the downstream direction, and the worker collides with the pushed sign vehicle. In addition, there has been an accident that the rear-end collision with the traffic sign causes the control of the steering wheel to be lost, and the rear-end collision with the worker located on the downstream side occurs.

  In order to solve the above problem, Patent Literature 1 and Patent Literature 2 disclose a technique in which a collision detection device is provided in a load cone to detect a collision, output a detection signal, and notify a worker. .

JP-A-6-266996 JP-A-2003-253630

  However, the technologies described in Patent Literature 1 and Patent Literature 2 provide a collision detection device on a road cone installed on a road, a signboard installed on a road, or the like. Therefore, if the rear-end collision vehicle enters the work area through a road cone or the like, the rear-end collision vehicle cannot enter and inform the worker of the fact that the collision with the sign vehicle has occurred. Challenges still exist.

  Further, the distance between the road cones in the tapered portion of the highway is about 20 meters. This interval cannot be easily reduced due to restrictions such as the number of road cones owned by workers engaged in operations such as accident handling and construction, and costs. Under such circumstances, the problem that the rear-end collision vehicle passes through the road cone and collides with the sign vehicle needs to be particularly addressed.

  Therefore, as a means for solving the above problems, a collision detection device according to the present invention is a collision detection device installed in a vehicle, wherein the base member and one end of the base member are openably and closably opened and closed. The base member receives an inertial force acting on the rear side of the vehicle, and is in a state between an open state separated from one end of the base member and a closed state in contact with one end of the base member. An opening / closing member formed so as to be capable of transition, a detection unit provided in the collision detection device, for detecting a state transition in at least one direction between the open state and the closed state, and the collision detection device And a detection signal output means for outputting a detection signal when the state transition is detected by the detection means.

  The vehicle is preferably an automobile, but on the other hand, includes a vehicle other than an automobile, for example, a train.

  The opening / closing member is a member that is connected to the base member and is formed so as to be capable of state transition between the open state and the closed state by receiving an inertial force acting on the rear side of the vehicle. is there. Further, the opening / closing member is rotatably connected around a hinge portion realized by a hinge structure connecting the base member and the opening / closing member, and receives an inertial force acting on the rear side of the vehicle. Thus, it is preferable that the state transition occurs. On the other hand, the opening and closing members should not be construed as being limited to those realized by a hinge structure. For example, the opening / closing member is slidably connected to the base member via a rail member disposed on the base member, and receives the inertial force acting on the rear side of the vehicle. A configuration or the like formed so that a state transition occurs can also be adopted.

  The detecting means may detect the state transition in at least one direction between the open state and the closed state. It is preferable that the detection unit is an impact sensor that detects an impact generated in the collision detection device at the time of the state transition between the open state and the closed state, but is not limited thereto. For example, when the opening / closing operation of the opening / closing member is realized by a hinge structure, an angle sensor, and when the opening / closing operation of the opening / closing member is realized by sliding through a rail member, A detection means such as a distance sensor can be appropriately selected and adopted according to a method of realizing the opening / closing operation.

  The detection signal output means does not ask whether it is wired or wireless.

  According to the collision detection device of the present invention, when another vehicle collides with the vehicle on which the collision detection device is installed from the rear side of the vehicle, the fact of the collision is detected, and the detection is performed. A signal can be output. Thus, it is possible to obtain the detection signal to be provided to various notification devices that are configured to receive the input of the detection signal and to notify a person present ahead of the vehicle of the fact of the collision to a person present ahead of the vehicle.

  The effects of the collision detection device according to the present invention described above are obtained by the following operations. That is, when another vehicle collides with the rear surface of the vehicle on which the collision detection device is installed, the vehicle is accelerated to the front side by receiving the impact. At the same time, inertial force acts on the rear side of the vehicle. Then, the open / close member receives the inertial force, and the open / close member makes a state transition between the open state and the closed state. Here, when the state transition is detected by the detection unit, the detection signal output unit outputs the detection signal.

  In addition, it is preferable that the detection unit includes an impact sensor that detects an impact generated in the collision detection device at the time of the state transition between the open state and the closed state.

  As the impact sensor, a sensor that can detect an impact, such as an acceleration sensor or a vibration sensor, can be used.

  Further, it is preferable that the detecting means detects the state transition from the open state to the closed state.

  Further, it is preferable that the base member and the opening / closing member are connected by a hinge structure.

  Further, an opening / closing restricting member that holds one of the open state and the closed state before the state transition is detected by the detecting means is provided, and the holding force of the opening / closing restricting member is the inertial force. It is also preferable that the force applied to the opening / closing member to change the state of the opening / closing member is smaller.

  The opening / closing restricting member is a member that holds one of the open state and the closed state before the state transition is detected by the detection unit. It is preferable that the opening / closing restricting member is a magnet provided on each of the base member and the opening / closing member. On the other hand, it should not be construed that the opening / closing restricting member is limited to that realized by the magnet. For example, the opening / closing member can be realized by a spring member or the like which is biased so as to hold one of the open state and the closed state.

  In the case of having the opening / closing restricting member, the malfunction of the collision detection device according to the present invention can be suppressed.

  That is, the holding force exerted by the opening / closing restricting member suppresses the occurrence of the state transition due to various impacts applied to the vehicle other than the collision of another vehicle from the rear side of the vehicle intended by the present invention. Here, the various impacts include, for example, an impact when opening and closing a door of the vehicle, a relatively small inertial force applied to the vehicle by driving the vehicle, and the like. Thereby, the malfunction of the collision detection device described above can be suppressed.

  An external power input unit provided in the collision detection device and used to input electric power from outside the collision detection device to the inside of the collision detection device; and It is also preferable that the cord that connects the power output unit that outputs the power and that is provided outside the device includes a cord position holding unit that prevents the power output unit from coming into contact with the trajectory of the opening and closing operation of the opening and closing member.

  The external power input unit is not limited to a USB (Universal Serial Bus) connector or the like that can insert and remove a cord. For example, the external power input unit also has a receptacle for a cord that extends from the collision detection device that cannot be inserted and removed. It is a concept that includes.

  The power output unit is provided outside the collision detection device and includes, for example, a cigar socket, a mobile battery, and the like.

  The code position holding unit is a member that prevents the cord from coming into contact with the trajectory of the opening and closing operation of the opening and closing member, and prevents the state transition from being hindered by a position shift or the like of the code. is there. The code position holding portion is, for example, disposed on a wall surface of the housing of the collision detection device, a code insertion groove into which the code can be inserted, or disposed on the housing, It can be realized by a cord holding clip or the like for holding the cord.

  In the case where the cord position holding section is provided, the opening / closing operation of the opening / closing member is prevented by the cord, and the occurrence of a situation where the state transition does not occur is suppressed, and reliable collision detection is performed. It becomes possible.

  That is, since the code position holding unit holds the code, the code is prevented from coming into contact with the trajectory of the opening / closing operation of the opening / closing member. Thereby, it is possible to suppress the cord from obstructing the opening / closing operation of the opening / closing member, and to obtain the above-described effect.

Further, an external power input unit that is provided in the collision detection device and is used to input power from outside the collision detection device to the inside of the collision detection device,
A cord that connects the external power input unit and a power output unit that outputs the power provided outside the collision detection device to each other, the mass of the cord, or the tensile force acting on the cord, the opening and closing member of the opening and closing member A cord fastening part for preventing the opening and closing operation from being hindered,
Is also preferable.

  The external power input unit is not limited to a USB (Universal Serial Bus) connector or the like that can insert and remove a cord. For example, the external power input unit also has a receptacle for a cord that extends from the collision detection device that cannot be inserted and removed. It is a concept that includes.

  The power output unit is provided outside the collision detection device and includes, for example, a cigar socket, a mobile battery, and the like.

  The cord retaining portion is a member that prevents the opening / closing operation of the opening / closing member from being hindered by the mass of the cord or a tensile force acting on the cord. Specifically, it is a member that holds the cord at a desired cord position, and allows the cord to have play near the external power input unit. Further, the cord fastening portion is provided, for example, on a wall surface of a housing of the collision detection device, and is provided in a code fitting groove or a housing in which the code can be fitted, This can be realized by a cord holding clip or the like for holding the cord.

  In the case where the configuration is provided with the cord retaining portion, the opening / closing operation of the opening / closing member is prevented by the cord, and the occurrence of the situation where the state transition does not occur is suppressed, and reliable collision detection can be performed. It becomes.

  That is, the cord fastening portion allows the cord to have play near the external power input portion. Thereby, it is suppressed that the mass of the cord is excessively applied to the collision detection device or that the tensile force acts excessively. Thereby, it is possible to suppress the cord from obstructing the opening / closing operation of the opening / closing member, and to obtain the above-described effects.

  Further, it is preferable that the base member includes a fixing portion that fixes the collision detection device to an installation position of the vehicle, where the collision detection device is installed.

  The installation position is preferably a dashboard from the viewpoint of easy installation. On the other hand, the installation position should not be construed as being limited to the dashboard, but may be, for example, a bonnet, a roof, a vehicle interior ceiling, or the like.

  It is preferable that the fixing portion is realized by a suction cup because no scratch or adhesive substance remains at the installation position due to the installation of the collision detection device. On the other hand, it should not be construed that the adoption of a configuration other than the suction cup is excluded from the fixing portion. For example, a seal, an adhesive, a screw, or the like may be used.

  In the case of having a configuration having the fixing portion, the malfunction of the collision detection device is suppressed by ensuring the installation of the collision detection device, and the other Thus, the inertial force resulting from the collision of the vehicle can be reliably transmitted.

That is, since the collision detection device is fixed to the installation position by the fixing portion, it is possible to suppress a situation in which the collision detection device falls from the installation position and causes a malfunction.
Further, since the collision detection device is fixed at the installation position, the collision detection device does not slip from the installation position to the rear side when the other vehicle collides with the vehicle. Accordingly, the collision detection device accelerates forward with the same acceleration as the vehicle integrally with the vehicle. Thus, the opening / closing member can reliably receive the inertial force.

  Further, it is preferable that the detection signal output means includes an antenna for transmitting the detection signal to a notification device for notifying a person present ahead of the vehicle of the state transition.

  The notification device is a device that notifies a person present ahead of the vehicle of the state transition. The notification device is preferably, for example, a vibration device attached to a helmet worn by each of the humans, but is not limited to this, and may be, for example, a speaker.

  In the case of the configuration having the antenna, the installation position of the notification device can be arbitrarily determined by a position where radio waves from the antenna reach. Accordingly, when the notifying device is disposed on the front side of the vehicle, it is possible to notify a person present ahead of the vehicle of the collision fact more quickly.

  Further, it is preferable that the power storage device further include a storage / discharge unit formed so as to be able to supply the stored power to the detection unit and the detection signal output unit.

  It is preferable to use an electric double layer capacitor as the storage / discharge unit. On the other hand, it should not be construed that the storage / discharge unit is limited to an electric double layer capacitor. For example, a lithium ion battery, a rechargeable battery, an alkaline ion battery, a manganese battery, a normal capacitor, or the like can be employed as the storage / discharge unit.

  In the case of having the configuration including the storage / discharge unit, when a situation occurs in which power input to the collision detection device is interrupted by an impact generated by a collision of the other vehicle with the vehicle. Even in this case, by using the electric power stored in the storage / discharge unit, the collision detection device can be operated.

  In other words, when power is input to the collision detection device using a code, the code may come off due to an impact generated by the collision of the other vehicle with the vehicle. Further, it cannot be denied that there is a possibility that a part of a power supply circuit inside the collision detection device may be damaged by an impact generated by a collision of the another vehicle with the vehicle. In such a case, in the configuration including the storage / discharge unit, power can be supplied to the detection unit and the detection signal output unit, and the collision detection device can be operated. It becomes.

  According to the collision detection device according to the present invention, when another vehicle collides with the vehicle on which the collision detection device is installed from behind the vehicle, the impact received by the collided vehicle is instantaneously received. The detection signal is converted to the detection signal, and it is possible to detect that the fact that the vehicle has collided has occurred. Accordingly, it is possible to secure the maximum time for a person existing ahead of the vehicle to receive the notification and to take an action to avoid danger after receiving the notification, and the person is involved. Accidents can be reduced.

FIG. 2 is a perspective view of the collision detection device 1 in an open state. FIG. 2 is a rear view of the collision detection device 1 in an open state. FIG. 2 is a plan view of the collision detection device 1 in an open state. FIG. 2 is a right side view of the collision detection device 1 in an open state. FIG. 2 is a perspective view of the collision detection device 1 in a closed state. FIG. 2 is a rear view of the collision detection device 1 in a closed state. FIG. 2 is a plan view of the collision detection device 1 in a closed state. FIG. 2 is a right side view of the collision detection device 1 in a closed state. It is a conceptual diagram showing an example of the installation position of the collision detection device 1. It is a conceptual diagram showing one of the Examples of the collision detection apparatus 1. FIG. 2 is a hardware configuration diagram of the collision detection device 1. 4 is a flowchart of the collision detection device 1 and the notification device. It is a conceptual diagram showing the conventional problem.

  Hereinafter, an example of an embodiment of a collision detection device according to the present invention will be described in detail with reference to the drawings. In the specification and the drawings, components having substantially the same functional configuration are denoted by the same reference numerals, and redundant description is omitted. Further, the technical scope of the collision detection device according to the present invention should be determined by the description of the claims, and should not be construed as being limited to the embodiments.

  First, an accident occurrence pattern during work on a highway, which is one of the problems that led to the invention of the collision detection device according to the present invention, will be described with reference to FIG. In FIG. 13, the upper part shows the state before the occurrence of the accident, and the lower part shows the state of the occurrence of the accident, with the arrow positioned in the middle of the figure.

  2. Description of the Related Art Conventionally, on expressways, work such as accident handling and road repair has been performed. However, a vehicle such as a passenger car 206 or a truck is running at a speed of about 100 km right next to the work area where these works are performed. Therefore, these operations involved a great danger.

  As shown in the upper part of FIG. 13, for example, when working in the traveling lane 208 of the highway, the worker 203 is provided with safety equipment such as a helmet 204. Further, an operation area is secured over several hundred meters of the traveling lane 208 using the arrow plate 211 and the road cone 205. Further, on the upstream side of the work area, a tapered portion in which the arrow plate 211 is sharply arranged is provided, and the lane is changed to the overtaking lane 209 over the lane boundary 210 for the vehicle traveling in the traveling lane 208. Urge you to Further, the vehicle is under work in order to suppress the occurrence of an accident in which the rear-end collision vehicle 201 involved in aside driving, dozing operation, etc. enters the work area surrounded by the load cone 205 from the tapered portion and runs over the worker 203. A sign car 200 capable of displaying the message is arranged upstream of the work area. This is because the collision between the rear-end collision vehicle 201 and the traffic sign 201 causes the rear-end collision vehicle 201 and the marker vehicle 200 to collide with each other, so that the speed of the rear-end collision vehicle 201 is reduced. It is intended to provide a protective barrier.

  Despite taking such safety measures, as shown in the lower part of FIG. 13, the rear-end collision vehicle 201 enters the work area surrounded by the load cone 205 from the tapered portion, and Collisions often cause the traffic sign 200 to be pushed downstream. In this case, the worker 203 working on the downstream side of the traffic sign 200 may collide with the traffic sign 200 and be injured. Also, at this time, the worker 203 may be seriously injured by being sandwiched between the material vehicle 202 and the marker wheel 200 existing downstream of the worker 203, or may be sandwiched by the wall 207 and the marker wheel 200. You can be seriously injured.

  Such injuries of the worker 203 can be prevented if the worker 203 can immediately notice the intrusion of the rear-end collision vehicle 201 into the work area or the collision of the rear-end collision vehicle 201 with the sign vehicle 200. is there. Therefore, the collision detection device 1 according to the present embodiment aims to detect the collision with the rear-end collision vehicle 201 at an early stage by installing the collision detection device 1 in the traffic sign 200.

  Next, an example of the configuration of the collision detection device 1 will be described. In the following, the physical configuration of the collision detection device 1, the configuration from the hardware side, and the flowchart will be described in this order. 1 to 8 for the external configuration of the collision detection device 1, FIG. 11 for the hardware configuration, and FIG. 12 for the flowchart.

  As shown in FIG. 9, the collision detection device 1 is preferably installed on a dashboard D of a traffic sign 100 provided with a handle H or the like.

  The collision detection device 1 includes a fixing member 30, a base member 20 connected to the fixing member 30 by pinching, an opening / closing member 10 connected to the base member 20 by a connecting member 15, and extending from the opening / closing member plane 11. Antenna 40. A module such as a CPU 50 (Central Processing Unit) shown in FIG. 11 is stored inside the opening / closing member 10.

  The fixing member 30 has a bowl-shaped housing 31 formed with a flat flat surface, and a lower end of the housing 31 is closed. The fixing member 30 is formed so that the collision detection device 1 can be fixed to the dashboard D by a suction cup. And a resin pad 32 formed in a disk shape. Further, a pad adjuster 33 used to make the pad 32 function as a suction cup is provided at the center of the plane of the housing 31. Further, a connection column 37 used for connecting the fixing member 30 to the connection member 15 is provided upright on a part of the inner periphery of the plane of the housing 31.

  At the center of the plane of the pad 32 covered by the housing 31, the lower end (not shown) of a central shaft body 36 that is vertically movably inserted through a hole (not shown) formed in the center of the plane of the housing 31. ) Is fixed. Further, a through hole (not shown) in the left-right direction is formed at the upper end of the central shaft body 36. Further, a pad adjuster 33 formed in a horizontally inverted triangular prism shape is provided so as to cover the central shaft body 36. Furthermore, a knob 34 is formed on the front side connecting the acute angles of the pad adjusters 33. Further, the pad adjuster 33 penetrates a position closer to the knob 34 than a bisector that bisects a right angle formed on both side surfaces of the pad adjuster 33 and the through hole formed in the central shaft 36. The adjustment shaft 35 is inserted so as to perform the adjustment. Further, the pad adjuster 33 is rotatable around the adjustment shaft 35 as a rotation center.

  The connecting column 37 has a Y-shaped cross section when cut in the axial direction and the vertical direction of the handle 39. Thus, the upper end of the connecting column 37 is formed in a branched shape, and the holding portions 38a and 38b are formed. A handle 39 for adjusting the holding force of the holding portions 38a and 38b is provided on the outer periphery of the connecting column 37.

  The base member 20 includes a base shaft 24 and a base sphere portion 25 that are a connection mechanism with the fixed member 30, a shaft rod 22 that enables connection with the opening / closing member 10, a base member side magnet (not shown), and a cord. And a fitting groove 23. In addition, a rectangular parallelepiped notch is formed at the upper end of the rear surface of the base member 20 so as not to interfere with the turning operation of the connecting member 15.

  A base shaft 24 having one end fixed to the lower end surface of the base member 20 and a base sphere portion 25 fixed to the other end of the base shaft 24 are provided below the base member 20. Be done. In addition, the base sphere portion 25 is connected to the fixing member 30 by clamping so that the angle can be adjusted by the clamping portions 38a and 38b of the fixing member 30.

  The base member 20 has a shaft 22 inserted in the left-right direction so as to bridge the left and right of the notch. Further, a base member side magnet is provided on a lower end surface of the notch so as to be attracted to an opening / closing member side magnet 16 provided on a surface of the connecting member 15 which is in contact with the lower end surface of the notch. It becomes. Note that the attracting holding force is smaller than the force that causes the opening / closing member 10 to transition from the open state to the closed state due to the inertial force generated by the collision between the vehicles.

  Further, a cord fitting groove 23 which is a cutout formed continuously in the left-right direction is formed on the front surface of the base member 20.

  The opening / closing member 10 is formed in a rectangular parallelepiped shape, and includes an opening / closing member plane 11, an opening / closing member front surface 12, an opening / closing member right side surface 13, an opening / closing member back surface 14, an opening / closing member left side surface (not shown), and an opening / closing member bottom surface (not shown). ) And a connecting member 15 disposed at the center in the left-right direction on the back side of the bottom surface of the opening / closing member.

  The connecting member 15 has a shaft 22 inserted in the left-right direction, and is formed to be rotatable around the shaft 22. Further, the opening and closing member 10 can open and close the one end portion 21 of the base member by rotating about the shaft rod 22 as a rotation center.

  In addition, a printed circuit board (not shown) in which a CPU 50 and the like described later are disposed is stored inside the opening and closing member 10. Further, an external power input unit (not shown) for inputting external power to the CPU 50 and the like is provided on the left side surface of the opening and closing member of the opening and closing member 10. The external power input unit is preferably a Micro USB socket.

  The antenna 40 is provided upright at the center of the opening / closing member plane 11, and is formed so as to transmit radio waves. The antenna 40 is connected to a printed circuit board housed inside the opening / closing member 10.

  Next, a hardware configuration stored inside the opening / closing member 10 of the collision detection device 1 will be described with reference to FIG.

  Inside the opening / closing member 10, a CPU 50, a RAM 51 (Random Access Memory), a memory 52, an impact sensor 53, and a communication unit 54 are stored. Further, power is supplied to each of these modules by an external power input unit provided on the left side surface of the opening / closing member.

  The CPU 50 reads out the program stored in the memory 52 and executes the program while temporarily storing information in the RAM 51, thereby performing control of each module and information processing of the collision detection device 1. Further, the CPU 50 may be realized by an MPU (Micro-Processing Unit).

  The RAM 51 temporarily stores programs and necessary information read from the memory 52 by the CPU 50. Further, as the RAM 51, an SRAM (Static Random Access Memory), a DRAM (Dynamic Random Access Memory), or the like can be used.

  The memory 52 stores a program necessary for the operation of the collision detection device 1. As the memory 52, a flash memory, a hard disk drive (HDD), a solid state drive (SSD), or the like can be used.

  The impact sensor 53 detects an operation when the opening / closing member 10 closes the base member one end 21, that is, an impact when the opening / closing member 10 rotates around the shaft rod 22 and collides with the base member one end 21. I do. Further, as the impact sensor 53, an acceleration sensor, a pressure sensor, or the like can be used. When an acceleration sensor is used, a sensor having a sensitivity of about 10 G is preferable. In this case, a malfunction does not occur due to an impact or the like when the door of the sign car 100 is opened and closed, and the closing operation of the opening / closing member 10 when the rear-end collision vehicle 101 collides with the sign car 100 is reliably detected. can do.

  The communication unit 54 transmits a detection signal when the collision is detected to the outside. Further, it is preferable to use the antenna 40 as the communication unit 54.

  The power input from the external power input unit to the collision detection device 1 is supplied to each of the modules and is stored in a storage / discharge unit (not shown). The storage / discharge unit is formed so as to supply the stored power to each of the modules. In addition, it is preferable to use an electric double layer capacitor as the storage / discharge unit.

  Next, the operation of the collision detection device 1 according to a program stored in the memory 52 of the collision detection device 1 will be described with reference to FIG.

  The collision detection device 1 detects a collision with the installed vehicle from the rear side of the vehicle. In order to notify the detection to the human, it is preferable to use a separate notification device. As the notification device, various devices such as a speaker 105, a helmet 104 with a vibration function, and a display panel can be used.

  The detection step (S10) detects a collision from the rear side of the vehicle with the vehicle on which the collision detection device 1 is installed. That is, the vehicle accelerates to the front side due to the collision from the back side. The opening / closing member 10 receives the inertial force on the rear side of the vehicle generated by this. The opening / closing member 10 that has received the inertial force makes a state transition from the open state to the closed state. By this state transition, the opening / closing member 10 and the base member 20 collide. The collision sensor 53 detects this collision.

  In the detection output step (S11), when the impact sensor 53 detects the impact, the detection is output as a digital detection signal.

  The transmitting step (S12) uses the communication unit 54 to transmit the detection signal. Preferably, the detection signal should be transmitted by wireless communication using the antenna 40.

  In the receiving step (S20), the communication unit 54 of the notification device receives the detection signal transmitted in the transmitting step (S12). Further, it is preferable that the communication unit 54 of the notification device is the antenna 40. Preferably, the detection signal is received by wireless communication.

  In the notification step (S21), the reception of the detection signal in the reception step (S20) is used as a trigger to notify a human of a car collision. Specifically, the reception of the detection signal in the receiving step (S20) is used as a trigger to notify a human of a car collision with a notification device, for example, a speaker 105, a helmet 104 with a vibration function, a display panel, or the like. . In this case, it is preferable to use the helmet 104 with a vibration function. This is because the helmet 104 with the vibration function is not so affected by external noise, luminous intensity, and the like, so that the notification to the human is sure.

(Example)
Next, one embodiment of the collision detection device 1 in a form for carrying out the invention will be described with reference to FIGS. FIG. 10 is a conceptual diagram illustrating one embodiment of the collision detection device 1 described in this specification. Further, in FIG. 10, for convenience, the work area 106 is represented by being surrounded by a dashed line. However, in practice, it is preferable to divide this range by a load cone or the like. In FIG. 10, reference numeral 107 denotes a wall, reference numeral 108 denotes a traveling lane, reference numeral 109 denotes an overtaking lane, and reference numeral 110 denotes a lane boundary. Further, in FIG. 10, it is assumed that the marker vehicle 100 and the material vehicle 102 are stopped, and the rear-end collision vehicle 101 collides with the marker vehicle 100 at a speed of about 100 km.

  The collision detection device 1 is installed on the dashboard D of the traffic sign 100 as shown in FIG. The collision detection device 1 is installed such that the front is on the rear side of the sign car 100. In addition, the collision detection device 1 is installed in an open state in which the opening / closing member 10 is separated from the one end portion 21 of the base member, as shown in FIGS.

Furthermore, the pad 32 is in contact with the surface of the dashboard D, and the pad 32 and the dashboard D are fixed by the pad adjuster 33.
More specifically, the pad is adjusted by holding the knob 34 from the state where the pad 32 is completely in contact with the dashboard D and the knob 34 is lying down, to the state where the knob 34 is upright. The tool 33 is rotated about the adjustment shaft 35 as a rotation center. At this time, since the adjusting shaft 35 is inserted at a position closer to the knob 34 than the right-angled bisector, the knob 34 is in an upright state, and at the same time, the adjusting shaft 35 and the plane And the distance increases. At the same time, the central shaft 36 is lifted up integrally with the adjustment shaft 35. At this time, since the lower end of the central shaft body 36 and the center of the plane of the pad 32 are fixed, the center of the pad 32 is lifted upward. Then, the space between the raised bottom surface of the pad 32 and the dashboard D has a pressure lower than the atmospheric pressure, and acts as a suction cup. Thereby, the pad 32 and the dashboard D are fixed.

  As shown in FIG. 10, the rear-end collision vehicle 101 collides with the rear surface of the sign vehicle 100. In this case, the marker car 100 is accelerated downstream due to the impact of the collision.

  At this time, an inertial force acts on the rear side of the traffic sign 100 on the traffic sign 100 and the collision detection device 1 installed on the dashboard D of the traffic sign 100.

  Since this inertial force also acts on the opening / closing member 10 of the collision detection device 1, the opening / closing member 10 receives an inertial force toward the back side of the sign vehicle 100. In this case, the opening / closing member 10 rotates around the shaft rod 22 in a direction approaching the one end 21 of the base member. Finally, the base member one end 21 and the opening / closing member 10 collide. In other words, the state of the opening / closing member 10 changes from the open state to the closed state. At this time, the cord that supplies power to the collision detection device 1 is fitted into the cord fitting groove 23 so as not to contact the trajectory of the opening / closing operation of the opening / closing member 10. The closing operation is not hindered by the cord.

  At this time, the impact sensor 53 detects an impact when the state of the opening / closing member 10 changes from the open state to the closed state. Further, at this time, since the collision detection device 1 includes the storage / discharge unit, even if the cord is disconnected due to the impact of the collision, power can be supplied to each module. This makes it possible to reliably detect the state transition.

  The detected state transition is transmitted to the notification device via the communication unit 54. That is, the signal is transmitted to the notification device by radio waves emitted from the antenna 40. The antenna 40 is disposed so as to be vertically upward when the opening / closing member 10 is closed. This makes it possible to reliably transmit radio waves farther away when the antenna 40 is closed than when the antenna 40 is oriented at another angle.

  Next, the respective communication units 54 of the speaker 105 and the helmet 104 with the vibration function, which are notification devices, receive the radio waves.

  The speaker 105 and the helmet with vibration function 104 each notify the worker 103 of the collision with the traffic sign 100, triggered by the reception of the radio wave. That is, in the speaker 105, for example, a siren is emitted at a high volume. If the helmet 104 has a vibration function, for example, the helmet is vibrated. Further, as the notification device, a device having various notification functions can be used, and is not limited to the speaker 105 or the helmet 104 with a vibration function.

  Thereby, the worker 103 can recognize that the sign vehicle 100 has been hit. As a result, it is possible to maximize the time for the worker 103 existing ahead of the signing vehicle 100 to take an action to avoid danger, and to reduce the occurrence of an accident involving the worker 103. Can be.

  Furthermore, as described above, the collision detection device 1 attracts the opening / closing member-side magnet 16 that is provided on the lower end surface of the notch and is in contact with the lower end surface of the notch of the connecting member 15. And a base member side magnet is disposed on the base member. As a result, a holding force for maintaining the open state is exerted, and the closing operation is regulated so as not to be caused by an impact generated by opening and closing the door of the sign vehicle 100, and occurrence of a malfunction is suppressed.

  Hereinafter, typical configurations that can be appropriately changed will be described.

  For example, the opening / closing member 10 can be provided with a metal plate or the like on the bottom surface of the opening / closing member 10 that comes into contact with one end 21 of the base member. In this case, the impact generated by the closing operation of the opening and closing member 10 can be made larger. This makes collision detection more reliable.

  For example, the collision detection device 1 can be installed on the dashboard D such that the opening / closing member 10 is closed at the time of setting and the front of the collision detection device 1 is the front of the vehicle. In this case, when another vehicle collides with the back of the vehicle, the state of the collision detection device 1 changes to the open state due to the inertial force generated toward the back of the vehicle. Further, in order to detect the state transition from the closed state to the open state, for example, an angle sensor or the like can be used.

  For example, the installation location of the collision detection device 1 is not limited to the dashboard D, and may be installed, for example, on a hood, a roof, a vehicle ceiling, or the like.

  Further, in the present embodiment, an example has been described in which the collision detection device 1 is installed in the sign car 100 provided for work on a highway, but the application of the present invention is not limited to this. For example, it can be installed in a vehicle in a work area other than a sign car. In addition, it can be used in the same manner as described above when working on a general road. Furthermore, even in a railway garage, it can be used to ensure the safety of workers by being installed on the railway.

DESCRIPTION OF SYMBOLS 1 Collision detection device 10 Opening / closing member 11 Opening / closing member plane 12 Opening / closing member front surface 13 Opening / closing member right side 14 Opening / closing member back surface 15 Connecting member 16 Opening / closing member side magnet 20 Base member 21 Base member one end 22 Shaft bar 23 Code fitting groove 24 Base Shaft 25 Base sphere portion 30 Fixing member 31 Housing 32 Pad 33 Pad adjuster 34 Knob 35 Adjusting shaft 36 Central shaft 37 Connecting column 38a Clamping portion 38b Clamping portion 39 Handle 40 Antenna D Dashboard H Handle 100 Marking vehicle 101 Rear end vehicle 102 Material vehicle 103 Worker 104 Helmet with vibration function 105 Speaker 106 Work area 107 Wall 108 Running lane 109 Overtaking lane 110 Lane boundary

Claims (10)

A collision detection device installed in a vehicle,
A base member,
The base member is connected to the base member so that one end of the base member can be opened and closed, and receives an inertial force acting on the rear side of the vehicle, thereby opening the base member apart from the one end of the base member. An opening / closing member formed so as to be capable of state transition between a closed state in contact with one end of
Detecting means that is provided in the collision detection device and detects a state transition in at least one direction between the open state and the closed state,
A detection signal output unit that is provided in the collision detection device and outputs a detection signal when the state transition is detected by the detection unit;
A collision detection device comprising: The detection means,
The collision detection device according to claim 1, further comprising: an impact sensor configured to detect an impact generated in the collision detection device at the time of the state transition between the open state and the closed state. The detection means,
The collision detection device according to claim 1 or 2, wherein the state transition from the open state to the closed state is detected. The collision detection device according to any one of claims 1 to 3, wherein the base member and the opening / closing member are connected by a hinge structure. Among the open state and the closed state, an opening / closing regulating member that holds one state before the state transition is detected by the detection unit,
The collision detection device according to any one of claims 1 to 4, wherein a holding force of the opening / closing restricting member is smaller than a force acting on the opening / closing member to change a state of the opening / closing member due to the inertial force. . An external power input unit that is provided in the collision detection device and is used to input power from outside the collision detection device to the inside of the collision detection device,
A code position holding unit that prevents a cord that connects the external power input unit and a power output unit that is provided outside the collision detection device and that outputs the power, from contacting a trajectory of the opening and closing operation of the opening and closing member. When,
The collision detection device according to any one of claims 1 to 5, further comprising: An external power input unit that is provided in the collision detection device and is used to input power from outside the collision detection device to the inside of the collision detection device,
A cord that connects the external power input unit and a power output unit that outputs the power provided outside the collision detection device to each other, the mass of the cord, or the tensile force acting on the cord, the opening and closing member of the opening and closing member A cord fastening part for preventing the opening and closing operation from being hindered,
The collision detection device according to any one of claims 1 to 5, further comprising: The base member,
The vehicle according to any one of claims 1 to 7, further comprising: a fixing portion that fixes the collision detection device to an installation position where the collision detection device is installed in the vehicle. The collision detection device according to any one of the preceding claims. The detection signal output means,
An antenna for transmitting the detection signal to a notifying device for notifying a person existing in front of the vehicle of the state transition, the antenna having an antenna for transmitting the detection signal. The collision detection device according to any one of the above. The storage device according to any one of claims 1 to 9, further comprising a storage / discharge unit formed so as to supply the stored power to the detection unit and the detection signal output unit. The collision detection device according to one of the above.

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